John Callahan, MD
Hospital Medicine · Orthopedic Surgery
20+ years in practiceNPI: 1952338048Licensed in NY
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Credentials & Recognition
Specialties
Practice Signals
Editorial signals beyond credentials. Patient transparency over opacity. See methodology.
Mid-Level (PA/NP) Use
Doctor-led visits
Years in Practice
20+ years
Estimated from NPI enumeration date
Other Hospital Medicine Doctors near New York
View all →Frequently Asked Questions about Dr. John Callahan, MD
Where does Dr. John Callahan, MD practice?+
Dr. John Callahan, MD practices in New York, NY. 3925 SHERIDAN DRIVE
SUITE 100
AMHERST, NY 142260000.
What is Dr. John Callahan, MD's phone number?+
Dr. John Callahan, MD's practice phone is 716-250-9999. Office contact information is verified on the PBCMMG profile.
What does Dr. John Callahan, MD specialize in?+
Dr. John Callahan, MD's primary specialty is Hospital Medicine, with additional focus on Orthopedic Surgery.
Is Dr. John Callahan, MD board certified?+
Board certification status for Dr. John Callahan, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. John Callahan, MD been practicing?+
Dr. John Callahan, MD has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. John Callahan, MD's NPI number?+
Dr. John Callahan, MD's National Provider Identifier (NPI) is 1952338048, registered in the federal NPPES registry.
Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards
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